Suspect or Victim?

Recently, there was a shooting in Chattanooga in which a 16-year-old male was killed and his 19-year-old friend was injured. This occured after the victims and another friend entered a home with masks and guns. The person who was in the house used self-defense and shot at them, which later took the 16-year-old's life. The person in the house who was acting in self-defense is the only person who has been charged so far in this case, in which he was charged with Criminal Homicide. He wasn't charged with Criminial Homicide because of the simple fact that he killed someone but because he didn't report the crime and was on the run. I'm finding myself asking many questions about this situation. I have only been hearing people take up for the two men and saying how they were innocent and made a simple mistake. I have sympathy for the 16-year-old's family but I don't find myself having any sympathy for the 19-year old. I'm wondering why he hasn't been charged with home invasion. He has changed his story numerous times and still he has not been charged. Why wasn't he charged with having a 16-year-old involved in a home invasion? Even though the 16-year-old may have had his own mind, it is still the same as someone getting in trouble for buying alcohol or cigarettes for a minor. The person inside the house should be charged with Criminal Homicide but I believe ONLY because he didn't report it immediately and went on the run like he had something to hide. Who is to say that he wasn't in the right by using self-defense toward three men who had masks on and were armed with guns. I feel that the 19-year-old should be charged with home invasion and have some responsibility for having the 16-year-old with him.So with this situation, who is the REAL victim and who is the suspect?
-Janay Roberson